src/main/java/nl/bioinf/premonition/webcontrol/PremonitionErrorController.java
package nl.bioinf.premonition.webcontrol;

import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServletRequest;

@Controller
public class PremonitionErrorController implements ErrorController {

    @RequestMapping("/error")
    public String handleError(HttpServletRequest request) {
        Object status = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);

        if (status != null) {
            Integer statusCode = Integer.valueOf(status.toString());

            if(statusCode == HttpStatus.NOT_FOUND.value()) {
                return "error";
            }
            else if(statusCode == HttpStatus.INTERNAL_SERVER_ERROR.value()) {
                return "error";
            }
        }
        return "error";
    }
}

